Tooth-holder



(NoMo deL) J. W. HARRIS.

TOOTHIHOLDER.

No. 491,883. PatentedApr. 23, 1889.

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UNITED STATES ATENT OFFICE.

JOHN W. HARRIS, OF SHIPPENSBURG, PENNSYLVANIA, ASSIGNOR TO EDWARD W.HERENDEEN, OF GENEVA, NEIV YORK.

TOOTH-HOLDER.

SPECIFICATION forming part of Letters Patent No. 401,883, dated April23, 1889.

Application filed March 15, 1888. $erial No. 267,229 (No model.)

To all whom it may concern.-

Be it known that 1, JOHN W. HARRIS, a citizen of the United States,residing at Shippensburg, in the county of Cumberland and State ofPennsylvania, have invented new and useful Improvements in Fasteningsfor the Teeth of Harrows, Cultivators, &c., of whichthe following is aspecification.

My invention. relates to that class of harrows, cultivators, or plows inwhich springteeth are employed; and the purpose thereof is to providesimple means whereby the curved shanks of said teeth may be firmly andrigidly secured in or upon the cross-beam, the more particular objectbeing to provide such an organization of parts that the teeth may be secured in place without the necessity of notching or drilling the shank,whereby the pitch or angle at which said tooth acts upon the soil may bevaried at will and the point of the tooth adjusted as to its height withrelation to the tooth-bar, and whereby the several teeth teeth may beeffected with economy of time and labor without the necessity of usingbolts and nuts or hammers and wrenches in eifecting said adjustment.

The invention consists in the several novelfeatures of construction andnew combinations of parts hereinafter fully described, and thendefinitely pointed out in the claims.

In theaccompanying drawings, Figure 1 is a perspective view of a portionof a tooth-bar for a harrow, plow, or cultivator, said bar havingsubstantially the usual construction with my improvement appliedthereto. Fig. 2 is a longitudinal central section of the shoe detached.1

Upon said tooth-bar at suitable intervals are mounted mytooth-fasteners, each consisting of a shoe formed of two parallel bars,2, united at one end by a bar, 3, and at the other by a rod or spindle,4, the former being either separate from or integral with the parallelmembers 2, while the latter is provided with a head, 5, at one end,while a nut, 6, is turned upon the opposite end. The rod 4 is passedthrough ears 7, raised somewhat above the upper edges of the arms 2, andthe connect ing-bar 8 is preferably formed upon the slightly-upturnedextremities 2 of the side bars, 2.

In each of the side bars, 2, I form a boss, 8, having an aperture toreceive a bolt, 9,where-. by the shoe may be fastened to the tooth-bar,and these bosses are arranged near opposite ends of the shoe to permitthe angular attachment of the shoe to the tooth-bar. Upon the inneradjacent faces of the parallel members 2, at or near the upturnedextremities 2*, I may form. flanges 10, having inward projection andconforming to the contour of the lower edges of the side bars.

Upon the rod or spindle 4, I mount a yoke, 12, having cams 13, turningupon said spindle. The shoe, formed as described, having been mountedupon the tooth-bar 1, the curved shank 14 of the tooth is insertedbeneath the connecting-bar 3 and between the side bars, 2, of the shoe,passing beneath the cams 13, which lie above the edges of the shank ofsaid tooth. When so far inserted as to bring the point of the tooth intoproper position, the yoke 12 is thrown over, and the cams 13 aretherebycaused to impinge upon the edges of the tooth-shank and bind thelatter firmlybetween said cams and the face of the tooth-bar. It isevident that all strain or draft upon the tooth will normally tend todraw the cams 13 more closely into engagement and lock the tooth moresecurely in place.

I may dispense with the flanges 10 without in any manner departing frommy invention; but when they are employed the shank of the tooth willrest thereupon.

The tooth may be instantly fastened or released by simply throwing theyoke 12 over through an arc of about ninety degrees, no

other fastenings being used. If independent vadjustment or repair isneeded, it may be effected without difficulty and without the necessityof detaching bolts or nuts or other auxiliary fastenings.

What I claim is- 1. The combination, with the spring-tooth and thetooth-bar of a cultivator, of the shoe comprising side bars, 2, acrossbar, 3, at one end thereof, between which and the tootlnbar thespring-tooth passes, a spindle, l, at the other end of the side bars,and a cam-lever journaled on said spindle to bind against the tooth andclamp it to the tooth-bar, substantially as described.

2. In a harrow, plow, or cultivator, the combination, with a shoecomposed of parallel side bars connected at one end by an integral. barand at the other by a spindle, of a yoke having cams turning upon saidspindle and a spring-tooth lying between said bars and be neath thecams, substantially as described.

